SUMMARY: Xylogics 7053 on 3/160

Yesterday I asked some questions about adding a Xylogics 7053 disk controller
to a Sun 3/160. Specifically, I was interested in whether or not a patch
tape was necessary for SunOS 4.0.1, and if the controller could reside in
slots 10-12 which have a common P2 bus. The answer is yes to both questions.

> 2. Given you're current configuation, slot 10 should be fine. The 1st
> VME/SMD disk controller can go in 7-12, the 2nd, 8-12. The Xy451 must
> be *before* the SMD disk controller (i.e., if your 7053 is in slot 10,
> the 451 must be in a slot < 10). A note to the slot assignment table
> mentions that the maximum number of disk controllers for a 3/160 is 2.
> Backplane jumpers PX03 and PX04 for the slot must be OUT.

> The patch tape for the SMD-4 fixes a bug in the format program. Without
>the patch, you need to save the bad block list away, because format rewrites
>the list in a format that only it and the 7053 (or 753) can read. Just in
>case you don't have it,the part number on the patch tape is 700-1805-11 Rev. A.